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Journal of Bone and Joint Surgery, 1954;36:113-118.
© 1954 by The Journal of Bone and Joint Surgery, Inc

MYELOGRAPHIC SIGN OF BRACHIAL PLEXUS AVULSION

James C. White M.D.1 and Joseph Hanelin M.D.1

1 Neurosurgical Service and the Department of Radiology, Massachusetts General Hospital, Boston

When roots of the brachial plexus are avulsed, a cuff of dura-arachnoid is torn out of the spinal theca. With retraction and shrinkage of the severed stump, a cavity is created which fills with spinal fluid. It is gradually enclosed by re-formation of the ruptured arachnoid and dura, and a traumatic meningocele is formed. This can be readily filled with radiopaque media, and the presence and extent of root avulsion can be demonstrated by myelography.


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